Results 81 to 90 of about 1,296,267 (363)

Dynamic Motion Planning Algorithm for a Biped Robot Using Fast Marching Method Hybridized with Regression Search

open access: yesActa Polytechnica Hungarica, 2019
: In the past few years, studies of biped robot locomotion and navigation have increased enormously due to its ease in mobility in the terrains that are designed exclusively for the humans.
R. Mandava, Katla Mrudul, P. Vundavilli
semanticscholar   +1 more source

Stability Properties of the Time Domain Electric Field Integral Equation Using a Separable Approximation for the Convolution with the Retarded Potential

open access: yes, 2011
The state of art of time domain integral equation (TDIE) solvers has grown by leaps and bounds over the past decade. During this time, advances have been made in (i) the development of accelerators that can be retrofitted with these solvers and (ii ...
Nair, N. V., Pray, A. J., Shanker, B.
core   +1 more source

Intravascular Ultrasound Image Segmentation: A Fast-Marching Method [PDF]

open access: yes, 2003
Intravascular ultrasound (IVUS) is a medical imaging technique that not only provides three-dimensional information about the blood vessel lumen and wall, but also directly depicts atherosclerotic plaque structure and morphology. Automatic processing of large data sets of IVUS data represents an important challenge due to ultrasound speckle and ...
Marie-Hélène Roy Cardinal   +4 more
openaire   +1 more source

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse   +16 more
wiley   +1 more source

Volume-Enclosing Surface Extraction

open access: yes, 2012
In this paper we present a new method, which allows for the construction of triangular isosurfaces from three-dimensional data sets, such as 3D image data and/or numerical simulation data that are based on regularly shaped, cubic lattices.
B.R. Schlei   +25 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

基于相速度预测的FMM弹性TTI介质qP波射线追踪

open access: yesDizhen xuebao
快速准确地计算走时和射线路径是实现地震成像和反演的关键。在各向异性介质中,地震波的传播速度会随传播方向的变化而变化,这使得求解各向异性条件程函方程时,相速度的精确估计和计算变得非常复杂和困难,进而影响各向异性介质中走时和射线路径的计算精度和效率。为此,提出了一种基于相速度预测的射线追踪方法,该方法根据波的传播规律以及斯奈尔方程,推导出一种相速度预测公式,解决了各向异性条件程函方程中相速度求解困难的问题,实现了快速稳定的射线追踪。数值算例表明,本文所提出的改进算法明显提高了走时计算精度 ...
Zhiyu Zhang, Xue Dong, Yiqun Zhao
doaj   +1 more source

Two semi-Lagrangian fast methods for Hamilton-Jacobi-Bellman equations

open access: yes, 2013
In this paper we apply the Fast Iterative Method (FIM) for solving general Hamilton-Jacobi-Bellman (HJB) equations and we compare the results with an accelerated version of the Fast Sweeping Method (FSM).
CY Kao   +11 more
core   +3 more sources

Universal Fast Marching Method to Identify Liver Image

open access: yesIOP Conference Series: Materials Science and Engineering, 2020
Abstract Liver segmentation is of prime importance in modern liver disease diagnosis and analysis. In our paper, random section of liver image is chosen and its histogram is achieved. From histogram, liver pixel intensity range is obtained.
Sangeeta K Siri   +2 more
openaire   +1 more source

AI‐Enhanced Gait Analysis Insole with Self‐Powered Triboelectric Sensors for Flatfoot Condition Detection

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
The given research presents an innovative insole‐based device employing self‐powered triboelectric nanogenerators (TENG) for flatfoot detection. By integrating TENG tactile sensors within an insole, the device converts mechanical energy from foot movements to electrical signals analyzed via machine learning, achieving an 82% accuracy rate in flatfoot ...
Moldir Issabek   +7 more
wiley   +1 more source

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